Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual banda possui uma frequência atual de 8tab (hpon)?
 ###Tabelas: CREATE TABLE defunct_callsigns (defunct_callsigns_id AUTO_INCREMENT PRIMARY KEY, Callsign VARCHAR, Area served VARCHAR, Frequency VARCHAR, Band VARCHAR, Freq currently VARCHAR, Purpose VARCHAR) CREATE TABLE running_backs (running_backs_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Car. INT, Yards VARCHAR, Avg. VARCHAR, Long INT) CREATE TABLE season_statistics (season_statistics_id AUTO_INCREMENT PRIMARY KEY, Year INT, Team VARCHAR, Number INT, Games INT, Kicks INT, Handballs INT, Total Disposals INT, Marks INT, Tackles INT, Goals INT, Behinds INT, Goal Accuracy % VARCHAR, Brownlow Medal Votes INT) CREATE TABLE overview (overview_id AUTO_INCREMENT PRIMARY KEY, State ranked in partisan order VARCHAR, Percentage Democrats VARCHAR, Percentage Republicans VARCHAR, Democratic/ Republican VARCHAR, Democratic seat plurality VARCHAR) CREATE TABLE list_of_coaches_by_club (list_of_coaches_by_club_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Nationality VARCHAR, Club VARCHAR, From INT, Until VARCHAR)  
SELECT Band FROM defunct_callsigns WHERE Freq currently = 8tab (hpon)